// 导入napi相关宏和类型
use napi_derive_ohos::napi;

/// 交易数据结构，代表一笔交易信息
#[derive(Debug)]
pub struct Transaction {
    pub user_id: String,
    pub amount: f64,
    pub currency: String,
}

/// 对外暴露的交易处理接口
/// 参数：用户ID、金额、币种
/// 返回值：处理结果字符串
#[napi]
pub fn process_transaction(user_id: String, amount: f64, currency: String) -> String {
    // 构造交易结构体
    let transaction = Transaction {
        user_id,
        amount,
        currency,
    };

    // 这里可以写具体的交易处理逻辑，比如调用信用卡API、更新库存等
    println!(
        "Processing ${:.2} {} transaction for user {}",
        transaction.amount, transaction.currency, transaction.user_id
    );

    // 这里简单返回处理成功的提示
    format!(
        "成功处理用户 {} 的 {:.2} {} 交易",
        transaction.user_id, transaction.amount, transaction.currency
    )
}

